Investments in Unconsolidated Affiliates (Tables)

6 Months Ended

Jun. 30, 2013

Equity Method Investments And Joint Ventures [Abstract]

Combined Financial Information of Unconsolidated Affiliated Companies

Combined financial information of the unconsolidated affiliated companies accounted for by the equity method is as follows:

	As of June 30,
	2013
Assets:
Current assets	$	41,212
Noncurrent assets		151,903
Total assets	$	193,115
Liabilities:
Current liabilities	$	45,955
Noncurrent liabilities		71,914
Total liabilities	$	117,869

	Three Months Ended
	June 30, 2013			June 30, 2012
Results of operations:
Revenue	$	40,946		$	31,403
Net income	$	(1,145	)	$	(5,328	)
	Six Months Ended
	June 30, 2013			June 30, 2012
Results of operations:
Revenue	$	58,734		$	54,187
Net loss	$	(10,498	)	$	(13,697	)

Summary of Activity in Income from Unconsolidated Affiliates

A summary of activity in income from unconsolidated affiliates for the six months ended June 30, 2013 and 2012 is as follows:

	June 30,
Income from unconsolidated affiliates	2013			2012
Loss from unconsolidated affiliates	$	(1,457	)	$	(1,788	)
Elimination of intercompany revenue		794			796
Loss from unconsolidated affiliates	$	(663	)	$	(992	)